Do you understand the keyring laser pointer?

The green laser pointer that astronomers and the general public practice using has an impact output of less than 5 milliwatts; In the United States, these are known as class 3A, the strongest lasers. Lasers with reduced power reminiscent of THOSE found in CD players and laser printers fall into category 1 or 2, while gadgets with more power reminiscent of medical or industrial devices fall into category 3B or 4. The better the type, the more stringent the use of warning labels required by the FOOD and Drug Administration. The green laser pointer that astronomers and the general public practice using has an impact output of less than 5 milliwatts; In the United States, these are known as class 3A, the strongest lasers. Lasers with reduced power reminiscent of THOSE found in CD players and laser printers fall into category 1 or 2, while gadgets with more power reminiscent of medical or industrial devices fall into category 3B or 4. The better the type, the more stringent the use of warning labels required by the FOOD and Drug Administration.